釋氏要覽 3.5

3.5

毘奈耶律云。說者。彰表開導之義也。今稱講者。說文云。講和解論議。廣雅云。讀也。顧野王云。解說談議也。訓誥也。

The Vinaya says: “Expounding means the function of making manifest and guiding.” In current usage it is called jiang (lecturing). The Shuowen says: “Jiang means to harmonize, explain, discuss, and debate.” The Guangya says: “It means to read aloud.” Gu Yewang says: “It means explaining, discussing, and conversing; it means instruction.”